[3.12] gh-123401: Fix http.cookies module to support obsolete RFC 850 date format (GH-123405) (#127829)

gh-123401: Fix http.cookies module to support obsolete RFC 850 date format (GH-123405)
(cherry picked from commit 359389ed51aecc107681e600b71852c0a97304e1)

Co-authored-by: Nano <nanoapezlk@gmail.com>
Co-authored-by: Wulian <1055917385@qq.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Victor Stinner <vstinner@python.org>